
Manhattan Project National Historical Park, Part I: B Reactor » 9_4_DSCF2425_v1
Drums of pea-sized boron carbide balls used as an emergency reactor shutdown measure at B Reactor and the other Hanford plutonium production reactors. These drums are currently outside B Reactor, presumably awaiting disposal.
Drums of pea-sized boron carbide balls used as an emergency reactor shutdown measure at B Reactor
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